Perhaps you should try some spelling variations:
hanh tranh » hanh trang, lanh tranh, nhanh thanh
hanh trinh » hanh chinh
kieu tinh » lieu tinh, trieu tinh, diep tinh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap
so kieu » so dieu, so lieu, ho kieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so kieu tinh - ((((hanh tranh) or (canh tranh))) or (hanh trinh)) cua dung cong ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so kieu tinh - ((((hanh tranh) OR (canh tranh))) OR (hanh trinh)) cua dung cong ban toan cau.
• Adding a wildcard symbol may retrieve word variants: so kieu tinh - ((((hanh tranh) or (canh tranh))) or (hanh trinh)) cua dung cong ban toan cau*.